Proper oar length

[Reel Friend]

I have recently purchase a 16x48 jon boat and I'm looking at oars for back trolling a few rivers. I know they come in lengths of 5ft - 8ft and I'm curious what is the length that the majority uses. Also what is your preference between wood or aluminum? Rivers in question are Little Su & Kenai. Thanks.

[fishnngrinn]

Here is a discussion on the topic.
http://www.woodenboat.com/forum/showthread.php?t=60858

[T.R. Bauer]

I can't help myself. It is imperative that the oars are long enough to reach the water......Bet you didn't know that